TY  - RPRT
TI  - Age constraints on the proposed Plio-Pleistocene boundary stratotype at Vrica, Italy
AU  - J. D. Obradovich
AU  - C. W. Naeser
AU  - G. A. Izett
AU  - G. Pasini
AU  - G. Bigazzi
PY  - 1982
DO  - 10.1038/298055a0
UR  - https://pubs.usgs.gov/publication/70011575
ID  - 70011575
ER  -